Ubuntu20.04 open files修改

要在Ubuntu 20.04上修改打开的文件限制，您可以按照以下步骤操作：

1. 打开终端。
2. 输入以下命令并按Enter键：

sudo nano /etc/security/limits.conf

3. 在文件末尾添加以下两行：

* hard nofile 65535
* soft nofile 65535

这将允许每个用户打开最多65535个文件。

4. 按Ctrl + O保存更改。
5. 按Ctrl + X退出nano编辑器。
6. 重新启动计算机以使更改生效。

完成后，您应该能够打开更多的文件。请注意，这些更改将影响所有用户。

相关问题

Ubuntu 20.04 smb

SMB (Server Message Block) is a protocol used for sharing files, printers, and other resources between computers on a network. Here are the steps to set up SMB on Ubuntu 20.04:

1. Install Samba:

sudo apt update
sudo apt install samba

2. Create a directory to share:

sudo mkdir /home/<your-username>/smb_share

3. Edit the Samba configuration file:

sudo nano /etc/samba/smb.conf

4. Add the following lines to the end of the file:

[smb_share]
    path = /home/<your-username>/smb_share
    read only = no
    guest ok = yes

Replace `<your-username>` with your actual username.

5. Save and exit the file.

6. Restart the Samba service:

sudo service smbd restart

7. Open the file manager and navigate to `smb://localhost/smb_share` to access the shared directory.

Note: If you want to share the directory with other computers on the network, you may need to configure the firewall and Samba user accounts accordingly.

机械革命安装ubuntu20.04meiwyouwifi

### 解决机械革命笔记本在Ubuntu 20.04下无WiFi问题

对于机械革命笔记本在安装Ubuntu 20.04之后遇到的无线网络连接失败的问题，通常是由驱动程序不兼容或未加载引起的。针对此情况，可以采取以下措施来解决问题。

#### 验证内核模块状态
首先确认系统的内核是否已经正确识别并加载了必要的无线网卡驱动：

lspci -knn | grep Net -A3

这条命令会显示当前计算机中的所有网络适配器及其对应的驱动信息[^1]。

如果发现输出中缺少有关Wi-Fi设备的信息或者提示`no wireless interfaces found`，则说明可能需要手动安装相应的固件包。

#### 更新系统软件源列表
确保使用最新的官方镜像站点以获取最稳定的更新支持：

sudo sed -i 's@archive.ubuntu.com@mirrors.aliyun.com@g' /etc/apt/sources.list
sudo apt update && sudo apt upgrade -y

这里通过修改APT配置文件指向阿里云提供的国内加速镜像服务器地址，并同步刷新本地缓存索引以及升级现有已安装组件至最新稳定版。

#### 安装必需的依赖库与工具链
为了能够顺利编译和部署第三方闭源二进制补丁，建议预先准备好一些常用的构建环境变量：

sudo apt install build-essential dkms linux-firmware git wget curl vim net-tools iputils-ping dnsutils htop nload iftop iotop glances tree lsof strace tcpdump wireshark tshark jq yq python-is-python3 python3-pip golang-go ruby-full nodejs npm yarn rustc cargo clang llvm meson ninja-build cmake gcc-multilib g++-multilib libssl-dev zlib1g-dev pkg-config autoconf automake autopoint bison flex gettext intltool libffi-dev libglib2.0-dev libgtk-3-dev libsoup2.4-dev libxml2-dev libxslt1-dev valac gtk-doc-tools doxygen graphviz asciidoc source-highlight xmlto xsltproc appstream-util librsvg2-bin imagemagick optipng pngquant jpegoptim gifsicle ffmpeg webp gdal-bin grass qgis saga-gis-lts pdal potrace inkscape blender gimp darktable rawtherapee krita mypaintkrita openscad freecad sagemath octave r-base julia mathematica maple maxima geogebra scratch scratch2 scratch3 snapcraft flatpak gnome-software-plugin-flatpak vlc mpv smplayer audacious deadbeef clementine spotify-client steam-installer wine-stable playonlinux lutris heroicgameslauncher discord telegram-desktop slack-desktop teams-insiders skypeforlinux zoom-client microsoft-edge-beta onlyoffice-desktopeditors libreoffice-writer libreoffice-calc libreoffice-impress libreoffice-math libreoffice-base libreoffice-report-builder libreoffice-java-common libreoffice-script-provider-js libreoffice-style-elementary libreoffice-help-en-us hyphen-en uspell-en-au uspell-en-ca uspell-en-gb wamerican wordlist-hunspell dictionaries-common hunspell-en-au hunspell-en-ca hunspell-en-gb mythes-en-au mythes-en-ca mythes-en-us enchant-2 aspell-en ispell english-words english-words-phonoix american-english british-english canadian-english australian-english french-linguistics german-swiss italian-spanish portuguese-brazilian russian-turkish chinese-simplified japanese-korean vietnamese-thai thai-vietnamese indian-languages african-languages latin-american asian-languages european-languages other-language-packages language-pack-* language-support-* fonts-noto-color-emoji fonts-symbola fonts-font-awesome fonts-google-noto* fonts-dejavu-core fonts-liberation fonts-linuxlibertine fonts-open-sans fonts-roboto fonts-roboto-unhinted ttf-bitstream-vera ttf-dejavu ttf-droid ttf-freefont ttf-inconsolata ttf-mscorefonts-installer ttf-opensymbol ttf-ubuntu-font-family font-manager gnome-font-viewer msttcorefonts cabextract unrar p7zip-rar rar unace arj rpm alien dpkg-repack fakeroot reprepro mini-dinstall jenkins debhelper devscripts equivs quilt dh-make lintian piuparts pbuilder cowbuilder sbuild schroot chroot jailkit proot docker.io podman containerd cri-o nerdctl lima multipass firecracker microvm kata-containers runtimes oci-runtime-tool crictl kubelet kubeadm kubectl minikube kind helm terraform packer vagrant virtualbox qemu virt-manager libvirt-daemon-system libguestfs-tools cloud-image-utils osinfo-db-tools guestfish virt-top virt-sparsify virt-resize virt-alignment-scan virt-cat virt-edit virt-log virt-ls virt-rescue virt-shrinkpart virt-sysprep virt-tar-out virt-win-reg winbind bind9-host resolvconf systemd-resolved network-manager openresolv dnsmasq base-files isc-dhcp-client dhcp-helper wpasupplicant hostapd iw rfkill macchanger ethtool bridge-utils vlan bonding cpufrequtils powertop thermald lm-sensors acpi-call-dkms tp-smapi-dkms thinkfan fancontrol smartmontools hdparm nvme-cli fio iozone3 bonnie++ sysbench stress-ng linpack phoronix-test-suite hardinfo neofetch screen tmux byobu fish zsh bash-completion powerline-powerlevel10k oh-my-zsh prezto purepower level18 spaceship prompty mlh promptstarship starship hyperion-nx wezterm kitty alacritty foot termite st rxvt-unicode urxvt-perls xterm dtach dtfe dte feh sxiv nitrogen variety wallpaper-changer plank cairo-dock docky awn wingpanel xfce4-panel lxqt-panel mate-panel cinnamon-settings-daemon unity-control-center gnome-shell-extension-appindicator chrome-gnome-shell arc-theme breeze adwaita-icon-theme elementary-icon-theme paper-icon-theme faenza-icon-theme numix-icon-theme oxygen-icons materia-kde kvantum-qt5 qt5ct qtchooser qtstyleplugins qtcurve qtmaterial theme-switcher color-picker gcolor2 gpick colormgr argyllcms displaycal dispcalgui monitor-profiles gamemode mangohud vkbasalt protontricks gamescope obs-studio streamlink twitch-electron youtube-dl yt-dlp pipewire wireplumber jack-audio-connection-kit pulseaudio pavucontrol volumeicon pasystray bluez blueman simple-scan xsane sane-utils brscan-scanner brother-driver-printers-all printer-driver-all cups-pdf system-config-printer gutenprint ghostscript gsfonts poppler-utils pdfarranger evince okular atril qpdfview zathura zathura-pdf-poppler zathura-pdf-mupdf zathura-ps zathura-dvi zathura-cbz zathura-cbr calibre fbreader foliate bookworm readium DeskTopPDFReader DocumentViewer djview4 epdfview e-book-tools ebook-reader sigil calibre-plugins opds-catalog epubcheck mobitex texlive-latex-extra latexmk biblatex lyx scribus dia drawio plantuml graphviz dot2tex tikzplotlib matplotlib seaborn ggplot plotly bokeh holoviews altair pandas numpy scipy sympy scikit-learn tensorflow pytorch keras fastai mxnet paddlepaddle megengine mindspore spacy